Apr 30, 2025
diff --git a/lib/matplotlib/backends/_backend_tk.py b/lib/matplotlib/backends/_backend_tk.py
            window = canvas.get_tk_widget().master
        tk.Frame.__init__(self, master=window, borderwidth=2,
                          width=int(canvas.figure.bbox.width), height=50)
        # Avoid message_label expanding the toolbar size, and in turn expanding the
        # canvas size.
        # Without pack_propagate(False), when the user defines a small figure size
        # (e.g. 2x2):
        # 1. Figure size that is bigger than the user's expectation.
        # 2. When message_label is refreshed by mouse enter/leave, the canvas
        #    size will also be changed.
        self.pack_propagate(False)

        self._buttons = {}
        for text, tooltip_text, image_file, callback in self.toolitems:
Original file line number	Diff line number	Diff line change
Expand Up		@@ -638,6 +638,14 @@ def __init__(self, canvas, window=None, *, pack_toolbar=True):
		window = canvas.get_tk_widget().master
		tk.Frame.__init__(self, master=window, borderwidth=2,
		width=int(canvas.figure.bbox.width), height=50)
		# Avoid message_label expanding the toolbar size, and in turn expanding the
		# canvas size.
		# Without pack_propagate(False), when the user defines a small figure size
		# (e.g. 2x2):
		# 1. Figure size that is bigger than the user's expectation.
		# 2. When message_label is refreshed by mouse enter/leave, the canvas
		# size will also be changed.
		self.pack_propagate(False)

		self._buttons = {}
		for text, tooltip_text, image_file, callback in self.toolitems:
Expand Down